Profile: Danville Signal Processing, Inc. specializes in manufacturing products for the communication, audio, military and instrumentation markets using digital signal processing (DSP) technology. Our products include dspstack™ DSP engines & I/O modules, dspblok™ DSP function modules, analog devices development tools and air traffic control products. The dspInstrument is a general DSP instrument offering two audio channels, digital I/O & an RS-232 and USB interface. It is well suited for small quality control systems and test cells, automatic level controls, audio limiters, signal splitters & test generators. It digitizes two channels of audio, executes DSP algorithms (filtering, signal generation, detection, etc.), and converts the signal back to audio. In addition, the RS-232 and/or USB interface is provided for control, detection and reprogramming the DSP-9600.